Stahl, who took the lead John Connor role in 2003's Terminator 3: Rise of the Machines, has not been seen by his family since 9 May. His estranged wife Roseann filed a missing persons report with LAPD on Monday, according to TMZ. Earlier this year she filed court documents asking for her husband's visitation rights with their daughter Marlo to be cut to eight supervised hours per week owing to what she claimed was his regular drug use.

Stahl, 32, has had a number of brushes with the law recently, and it is feared he may be frequenting the notorious Skid Row quarter of Los Angeles, where crime, poverty and drug use are rife. Terminator 2 star Edward Furlong almost died from a heroin overdose in 2001, so Stahl's predicament has been described by some as part of a "John Connor curse".

He first became known as a child actor with 1993's The Man Without a Face, before moving to adult roles in films such as Sin City, In the Bedroom and Terminator 3. His most recent role was in the 2011 war satire Afghan Luke, in which he played the lead. While his star has fallen since Terminator 3, the actor has continued to work regularly in film and television.

Furlong's most recent high profile role was in the 2011 Seth Rogen film The Green Hornet, where he played a scuzzy drug dealer. Hours after the movie's premiere in January last year he found himself behind bars for violating a restraining order against his wife. Furlong was later released after posting $75,000 bail.